Continuous Clocking (CC)-mode for ACIS

ACIS columns can be read out continuously in Continuous
Clocking (CC) mode. This provides much higher time
resolution (3 msec) than the standard frame readout
modes. However CC-mode prevents any information about the
row number of an event from reaching the ground, so a source
appears as a stripe along a column. Event grades are
reconstructed on-board.